Machine for the manufacture of glass articles



July 10, 1923- R. F. HALL MACHINE FOR THE MANUFACTURE OF GLASS ARTICLESFiled July 27, 1920 nu 4 rd,

of the position or movement of the swinging Application filed m 27,1920. Serial 116. access.

To aZZ'whom it may concern: I v

Be it known that I RoBnR'r Fnnnnmox HALL,'a subi'ect of the king ofGreatBritain and Ire and, residing at Moseley, near Birmingham, in the countyof Warwick, England, have" invented certain new and useful Improvementsin Machmes for the Manufacture of Glass Articles (for which I have filedan -application in Great Britain, No. 8769, filed Jan. 21, 1918), ofwhich the following is a specification.

This invention relates to rotary machines for the manufacture of glassarticles,and refers to that type of such machines 1n which the moltenglass, from which the articles are to be formed, is drawn by means ofsuction into aparison or other mold, the said mold being open at thebottom and being lowered to the surface of the molten glass,toenable-theglass to be drawn into the interior thereof, after which themold is raised and the parison therein contained is enclosed in afinishing mold and carried 7 through the various operations for theproduction of the finished article.

It has already been proposed to mount the finishing or blowing molds in001118.60 tion with a main rotatable framework so that, theyare adaptedto swing upwards, and to raise them at appropriate times by means ofrack and pinion caring or by means of a roller attache beneath the swim'ng framework and running upon a suite 1e camway.

My present invention has for one of its principal objects to provideimproved means for carryi, raising and lowe the finishing mol andassociated parts.

A further object of the intention is to provide improved means fonopenmgand closing the mold, so that such opening and closing may be readilyefiected irrespective frames or the like carrying the molds.

Other objects of the invention will also be referred to in thespecification asregards minor constructional. details and arrange ments.r

In the general way. of carrying out my invention, each finish a "moldiscarried by a pivoted frame or member, constituting a lever of the firstorder, adapted to SW11! about a horizontal axisyi's counterbalancedparts in an elongated loop or it p annulus 15, ,and is adapted to beraised and lowered at v ph p ate times by means of acam or an electricsolenoid or by fluid pressure or by acombination of any or all of thesemeans.

The opening and closing of the halves of the mol are operated by a leveror levers or the like independently-of the movements e frame or membercarry-- or position of t ing the molds. t 4

This openin and closing ma by toggle mec anism operated be efiected by alever pivoted to the 'swin 'ng frame, the said lever being operated trough suitable mechanism, from a cam in connection with the fixedframework of the machine.

I prefer to mount the mechanism carrying the finishing mold and itsassociated uivalent, adapted to be. easily laced in position so as toorm an integra portion of the main framework, and easily removedfrom'such framework to facilitate the building and repair of themachine. a

In order that my invention may be more clearl understood 1 will nowproceed to descri e the same with reference to the accompanying drawingwhich shows more or less diagrammatically a part sectional eleva= tionof the mechanism for operati and controlling the finishing mold of oneunit of a bottle maki m" a ne of the general type more particiil arlvdescribed in In so pending application l lo. 399,427, filed July 27,1920. L

The numerals of reference in the tollowing description correspond as faras pible with those used in connection with the draw ings accompanyingmy said co-pending appllcation. Y

1 indicates one of the supporti wheels, adapted to run un rails 2, in tneighborhood of the rnace, in the ordinary manner. v v

The wheels snort the main lower Era-- work ofthe ma 1 which is comd oflongitudinally disposed girders f2 connected by transverm rders &

The 'rdcr ramework 7, 8 carries a ring 11, which in turn carries achanneled lit-d 12, forming the lower member of a fit bearing. 14 isanother ring to i l-1mg the n per member of the ball bearing, and tothis latter Ping-i8 attached an internall r Suitably supported upon elows 'vertical struts 19, carried by brackets 20 from the column 16. '24is another cam carried by suitable brackets on the fixed framework ofthe machine.

Bolted between a rotatable member at the top of the machine and theannulus 15 is a column or framework 96 hereinafter called thebifurcatedcolumn, a column of this description being provided for eachbottle making unit.

Each column 1S formed from castings of H section at the lower part andsolid up to the height of the trunnions 31, from which position to thetop they are hollow, so that air may be passed down from the airreservoir to the top of the machne to the trunnions 31.

The upper part of the bifurcated column -may carry the parison mold andits associated mechanisms which need not be described in detall, in thepresent specification as they! form the subject of a co-pendingapplication.

As already explained, each of the bifur-- cated columns is formed at 31with hearings in which work the trunnions of the lever or frame carryingthe finishing mold and its associated parts.

This consists of a casting 300 formed with a suitable passage for air inconnection with the hollow passages in the sides of the bifurcatedcolumnthrough the trunnions and bearings 31.

The casting 300 with the extension arm 300 on the other side of thetrunnion31 constitutes a lever of the first order.

301 is a counterbalance weight, which is preferably somewhat heavierthan the finish ing mold and associated parts, so that the said moldtends normally to remain in the raised position.

The weight 301 is adapted to slide vertically upon a guide 302 connectedby means of a horizontal stay 303 to the bifurcated column above thetrunnions 31.

At the lower end the vertical guide 302 is of T shape and is connected.by two horizontal stays 304: to the base 305 of the bifurcated column96.

It will thus be seen that the weight 301 can slide vertically upon theguide 302, which passes therethrough.

The arm 300 IS bifurcated, one of the arms of the fork coming on eachside of the weight. Each arm is provided with a roller 306, and each ofthese rollers is adapted to work in a horizontal slot 307 on the outsideof the weight 301 so that as the weight rises and tells, it raises andlowers the frame 300 by turning it about its fulcrum 31.

The raising and lowering of the weight the arm 49 from the pivot 53)behind one half M of the finishing mold.

The opening and closing of the finishing mold is effected in thefollowing manner.

Each of the arms carrying one half M of the mold is extended backwardsbeyond the bearing and the ends of the arms are connected to linkingrods which are in turn connected to a slide block 122, a helicalcompression spring surrounding each of the rods.

The block 122 is connected to an S shaped lever 123, pivoted at 124 tothe swinging framework 300. The S shaped lever 123 is connected at 125to a link 126, which is pivoted at, 127 to one arm of a bell crank leverpivotally mounted at 128 in a recess within the weight 301.

The other arm of this bell crank lever is pivoted at 308 to a verticalrod 309 which is operated from rollers 310 in connection with the cam 17It will be seen that the cam 17' may be so proportioned and arran edthat the opening and closing of the finlshing mold can be eii'ected tosuit requirements independently of the position of the mold. In practiceit Where the rise of the mold is brought about solely by means of a camas is usually the case with rotary machines tor the manufacture ofbottles or the like, there is considerable friction and a large amountof work has to be expended in order to elict the raising, and in anycase the use of steep cams to effect a raising operation is to bedeprecated.

The counterbalance weight which it is to be remembered tends normally tokeep the blowing mold pressed securely in t e correct positionrelatively to the neck mo d causes very little work to be expended inthe operation of the raising of the mold, since the cam rollers inconnection with the weight simply run down a steep slope on the cam. Onthe other hand, the slope which raises the weight and depresses the moldmay be of comparatively moderate gradient and ii the amount of weight oneach side of the fulcrum is nearly equal, the operation of lowering themold. by raising the weight also causes very little work to be expended.

in some cases the raising and lowering of the finishin mold may beeffected by means of an electric solenoid or by means of a fluidpressure motor, working alone or in combination with suitable cams.

Examples of raising and lowering the counterbalance weight of thefinishing molds by means of an electric solenoid or by'a fluid pressuremotor being l\given in my co-pendmg application Ser. 0. 399,430, filedJuly 27, 1920, it is not thought necessary to illustrate these methodsin detail in connection with the present specification.

- It is to be pointed out that in the preferred construction the levercarrying the finishing mold is mounted in an elongated loop or itsequivalent more fully described in the specification of my saidco-pending applicatlon, which can be easily removed from the rotatableframework of the machine by unbolting it from the rotatable ring at thebottom and from the arm or the like at the top; or in some cases boththe arm and the elongated loop or its equivalent may be detached as awhole. It is also preferable to mount the parison mold and itsassociated parts in the same elongated loop at a higher level, so thatthe arison and finishing molds of any unit can be removed as a whole andthe unit can be quickly replaced by a fresh one in case of accidentswithout stopping the machine for any considerable time. As analternative the unit may be removed altogether and the machine can beworked without the said unit.

It will be understood that the particular details of construction may bevaried without departing from the principle of my invention.

What I claim as my invention and desire to secure by Letters Patentis 1. A finishing mold mechanism for machines for forming glass articlescomprlsing a supporting member, a swinging mold carrying frame pivotallysupported between its ends on the supporting member, a finishing mold onthe swinging frame member at one side of the pivot, and means connectedto the frame member at the other side of the pivot for swinging theframe member.

2. A finishing mold mechanism for machines for forming glass articlescompris ing a supporting member, a swinging mold carrying framepivotally supported between its ends on the supporting member, afinishing mold on the mold carrying frame at one side of the pivot, acounterbalance on the frame at the other side of the pivot, and meansfor effecting a swinging movement of the mold carrying'fr'ame member.

3. A finishing mold mechanism for machines for forming glass articlescomprising a supporting member, a swinging mold carrying frame pivotallysupported between its ends on the supporting member, a finish- .ing moldcarried on the swingin member at the other side of t mold supportingframe at one side of t vertica ly movable Weight having a sliding andpivoted connection with the mold carrying frame at the other side of thepivot, a guide on which the weight is vertically movable, and means foreffecting a vertical movement of the weight.

at. In a machine for the manufacture of glass articles the combinationof a rotatable framework, a lever of the first order, pivoted to thesaid framework, a finishin mold carried by the outer arm of the saidlever, a counterbalance weight in connection with the inner arm of thesaid lever, and means for moving said weight at appropriate times, forthe purposes set forth.

'5. In a rotary machine forthe manufacture; of glass articles, thecombination of a rotatable framework, a bent lever of the first orderpivoted to the said framework, a sectional finishin mold carried by theouter end of the said lever, a counterbalance, weight in connection withthe inner arm of the said lever, and means for moving said weight atappropriate times, for the purposes set forth.

6. In a machine for the manufacture of glass articles, the combinationof a fixed base, a framework rotatable on the said base, a bent lever ofthe first order pivoted to the rotatable framework, a sectional finishing mold, the sections of which are carried by arms pivoted to the outerarm of' the said lever, a counterbalance weight in connection with theinner arm of the said lever, means for moving said weight, and means foroperating the arms carrying the sections of the mold, for opening andclosing the same, substantially as described.

In a machine for the manufacture of glass articles, the combination of afixed base, a framework rotatable upon the said base, a bent lever ofthe first order pivotedto the rotatable framework, a finishin moldcarried by the outer arm of the sai lever, a weight slidable in guidesin the framework, means in connection with the weight for engaging theinner end of the said lever, and means for raising and lowering theweight, for the purposes set forth.

8; A finishing mold mechanism for machines for forming glass articlesincluding a stationary frame, a rotatable frame mounted thereon, a camtrack on the stationary frame, a swinging finishing mold carryin memberpivotally supported between its'en s in a part of the rotary frame, afinishing mold on the pivotally supported mold carrying member at oneside of the ivot, a counter-balance having a sliding an pivotedconnection with said swingin mold carrying for moving the counterbalancevertically up or down to swing the pivoted mold carrye pivot, means a epivot, a v

ing frame through an are, guides for the counterbalance whereby it isheld against lateral movement, and means including an y the purposes setforth.

arrangement of links pivotally carrie the counterbalance for efi'ectinthe operation of the finishing mold, sai means also including a camadapted to engage in said cam track, the arrangement being suchthat themold can be operated independently of the position of thecounterbalance. v

9. In a-machine for the manufacture of glass articles, the combinationof a fixed ase, a framework rotatable on the said base, a bent lever ofthefirst order pivoted to the rotatable framework, a finishing moldcarried by the outer arm of the said lever,

a weight slidable in vertical guides in the saidv framework, horizontalslots in the wei ht engaging rollers at the inner'end of the lever, acam in connection with the fixed base, and a cam follower to said'cam,such follower being connected to the weight, for

egan 10. In a machine for'the manufacture of glass articles, thecombination of a fixed base, a framework rotatable on the said base, abent lever of the first order pivoted to the rotatable framework,asectional finishing of the finishingrmold, substantially as described.

In testimony whereof, I have hereunto subscribed my name.

aonna'r FREDERICK HALL.

